While developing an electric bicycle for his San Rafael, Calif., company, Marcus Hays had planned to insert a battery into one of the bike's supporting tubes. But then he did an analysis of his concept with three-dimensional ...

Dennis Siegel, a student at the University of the Arts in Bremen, Germany has built what he calls an electromagnetic harvester—it converts electromagnetic fields in the immediate environment into electricity to recharge ...

Gadget

A gadget is a small technological object (such as a device or an appliance) that has a particular function, but is often thought of as a novelty. Gadgets are invariably considered to be more unusually or cleverly designed than normal technological objects at the time of their invention. Gadgets are sometimes also referred to as gizmos.